In the era of Big Data, Latin American countries and biomes remain underrepresented. To remediate this issue, promoting repositories for biodiversity data focused on Latin America is a main priority. VegAndes -Dpt the vegetation database for the Latin American highlands (GIVD: SA-00-005), is a novel dataset for georeferenced and standardized information on vascular pants in the region. The database compiles 5,340 vegetation plots sampled above the montane treeline and below the permanent snowline in 11 Latin American countries and spanning over seven decades. VegAndes currently encompasses 5,804 taxon names, corresponding to 3,858 accepted names, as well as 136 syntaxon names. The database is nested within a scientific consortium of Latin American experts on highland vegetation and piloted from the University of the Andes (Colombia). Because the VegAndes data can support multi-scale studies in botany, ecology and biogeography, the database makes an essential contribution to biodiversity research and management perspectives in Latin America.
Taxonomic reference: TROPICOS (preferential source, www.tropicos.org/), World Flora Online (secondary source, www.worldfloraonline.org/).
The low productivity in the Japanese plum (Prunus salicina Lindl) is related with self-incompatibility characteristics, so other species or varieties that act as pollinators need to be present to improve fruit production. The objective of this work was to study the efficiency of pollination in different genotypes of P. salicina using treatments of natural self-pollination, cross-pollination with P. armeniaca cv. Giada and open pollination. These treatments were evaluated through viability techniques and in vitro and in vivo germination of pollen grains; the growth of pollen tubes along the pistil was also observed. Genotypes used in this study showed differences for each one of the pollination treatments. Some genotypes showed signs of self-sterility and interincompatibility with P. armeniaca cv. Giada, while others showed partial self-fertility characteristics or pseudocompatibility. Moreover, some genotypes showed a higher affinity coefficient with cv. Giada and these will be indicating a possible intercompatibility. These studies will be an important contribution breeding and selection of intra and intercompatible genotypes to be used in commercial orchards.
Introducción y objetivos: El objetivo de este trabajo fue clasificar las vegas en los Andes Centrales entre los 28° y 53°S, con base en la geomorfología y la hidrología. Además, se buscó caracterizar las vegas del área de estudio en base a la superficie, altura y pendiente según tipología.
M&M: La determinación de las distintas tipologías se realizó en base a un enfoque biofísico integrado a distintas escalas espaciales, donde se identificó las vegas y se determinó su vinculación con la hidrología y geomorfología. Se determinaron los tipos de escurrimientos dominantes y las unidades geomorfológicas. Se utilizaron imágenes satelitales ALOS- AVNIR-2, Landsat 5 TM y datos de campo.
Resultados: Se identificaron 304 vegas que están determinadas por la unidad geomorfológica (planicies fluviales, abanico aluvial, ladera, piedemonte indiferenciado, depresión sin descarga superficial con o sin agua y falla) y el tipo de escurrimiento dominante (superficial lineal, subsuperficial mantiforme y subsuperficial mantiforme a superficial lineal). Se reconocen cuatro tipologías de vegas: Ribera, Ladera, Depresión y Falla. La tipología de Ribera y de Ladera fueron las dominantes en cuanto a número y superficie. La altura y la pendiente no resultaron diferentes entre tipologías.
Conclusiones: Las vegas en los Andes Centrales responden a 4 tipologías: Ribera, Falla, Ladera y Depresión. Existe una estrecha relación entre las vegas, la geomorfología y el escurrimiento dominante, lo que permite clasificarlas y analizar distintas medidas de manejo. Los resultados obtenidos son un aporte al estudio de ecosistemas de alto valor ecológico y socio-económico en la región.
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